The correct answer to this open question is the following.
Although there are no options attached, we can answer the following.
The Lausanne Congress on World Evangelization brought together participants from over 150 nations.
The first edition of the Lausanne Congress on World Evangelization was held in Laussane, Switzerland in July 1974. It was an international event that tried to gather Christian people and missionaries from all over the world. The result of the works during the Congress was the Lausanne Covenant, a guideline of principles of the Evangelical Church, inviting all of its followers to spread the word and example of Jesus in every corner of the world.